| /******************************************************************************* |
| * Copyright (c) 2005, 2011 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.corext.template.java; |
| |
| import java.util.List; |
| |
| import org.eclipse.jface.text.templates.TemplateContext; |
| import org.eclipse.jface.text.templates.TemplateVariable; |
| import org.eclipse.jface.text.templates.TemplateVariableResolver; |
| |
| import org.eclipse.jdt.core.Signature; |
| |
| import org.eclipse.jdt.internal.corext.template.java.CompilationUnitCompletion.Variable; |
| |
| import org.eclipse.jdt.internal.ui.text.template.contentassist.MultiVariable; |
| |
| /** |
| * Resolves to the lower bound of a type argument of another template variable. |
| * |
| * @since 3.3 |
| */ |
| public class TypeVariableResolver extends TemplateVariableResolver { |
| |
| public TypeVariableResolver() { |
| } |
| |
| /* |
| * @see org.eclipse.jface.text.templates.TemplateVariableResolver#resolve(org.eclipse.jface.text.templates.TemplateVariable, org.eclipse.jface.text.templates.TemplateContext) |
| * @since 3.3 |
| */ |
| @Override |
| public void resolve(TemplateVariable variable, TemplateContext context) { |
| if (!(variable instanceof MultiVariable)) { |
| super.resolve(variable, context); |
| return; |
| } |
| MultiVariable mv= (MultiVariable) variable; |
| List<String> params= variable.getVariableType().getParams(); |
| if (params.isEmpty()) { |
| super.resolve(variable, context); |
| return; |
| } |
| |
| JavaContext jc= (JavaContext) context; |
| String reference= params.get(0); |
| int index= 0; |
| if (params.size() > 1) { |
| String indexParam= params.get(1); |
| try { |
| index= Integer.parseInt(indexParam); |
| } catch (NumberFormatException x) { |
| } |
| } |
| TemplateVariable refVar= jc.getTemplateVariable(reference); |
| if (refVar instanceof JavaVariable) { |
| JavaVariable jvar= (JavaVariable) refVar; |
| resolve(mv, jvar, index, jc); |
| |
| return; |
| } |
| |
| |
| super.resolve(variable, context); |
| } |
| |
| private void resolve(MultiVariable mv, JavaVariable master, int index, JavaContext context) { |
| Object[] choices= master.getChoices(); |
| if (choices instanceof Variable[]) { |
| context.addDependency(master, mv); |
| Variable[] variables= (Variable[]) choices; |
| String type= master.getParamType(); |
| for (int i= 0; i < choices.length; i++) { |
| String[] bounds= variables[i].getTypeArgumentBoundSignatures(type, index); |
| for (int j= 0; j < bounds.length; j++) |
| bounds[j]= Signature.getSignatureSimpleName(bounds[j]); |
| mv.setChoices(variables[i], bounds); |
| } |
| mv.setKey(master.getCurrentChoice()); |
| } else { |
| super.resolve(mv, context); |
| return; |
| } |
| } |
| |
| } |